Container



M. LElssE CONTAINER Filed 001;. 25. 1926 March 18, 1930.

.v by -22 4 .dtiorney. v

Patented Mar. 18 1930 MATTHIAS LEIssrt'oF nUIsBUReMnInERIoH, GERMANY coNTnINnR Application filed October 23, 1926, Serial No.

The present invention relates to a container for plastic substances such as ointments.

pastes, and the like squeezing. Containers forthis purpose are already known in which awall of the container-is guided piston like in the other part of the container, thewithdrawal of the contents beingr-eifected by the inward movement of one part of the container. I Such containers are, however, unsatisfactory for the reason I that it is almost impossible to secure a tight sliding fit, and in addition to the heavy pressure necessary for effecting the withdrawal of the contents, where the pressure-is not applied exactly centrally, the movable part of the container is forced-sideways and thus'caught;

which are withdrawn Furthermore, it has been proposed to make a container from a rigid wall and'ia collapsible wall, the latter consisting of a special sub stance which canbe easily shaped, the 'contents of the containerbeing withdrawn by pressure upon the collapsible wall. Such containers are,however, very'awkward to handle.

As the contents are withdrawn irregularities on the face of the container are formed whereby the ditficulties of effecting the removal "of the contents are accentuated. I Other known and similarcontainers such, for example, as a container in whichthesidewalls consist of a material folded after the manner of a concertina, likewise failto fulfil practical requirements. Furthermore, they do not give the contents of the container air.-

and complete withdrawal of the contents-f The present inventionhas for its object to provide va box-shaped container from which the contents can-be squeezed and-which'can beproduced in bulk at a small cost, which, furthermore, gives airtight protection to the contents, and which lastly enables the whole contents to be expelled in a very simple manner. Moreover, theinvention has for its object to secure the withdrawal of the whole of the contents by the simple application of slight pressure.

According to the invention the, container consists of arigid wall or part of determined shape and an oppositely disposed collapsible tight protection and do not admit ofthe ready 143,681, and in Germany November 4, 1925.

wall, the shape of which can be-altered in such a way-thatby localpressure in determined position upon the collapsible wall, the latter automatically altersto the shape of the-rigid wall or part as the contents of the container continue to be withdrawn, and when the con tainer is quite empty the collapsible wall lies 'flat against the rigid wall. The collapsible wall is advantageously formed of a central pressure part and one or more annular parts provided concentrically thereto, which parts are hingedly'or flexibly connected together and to the pressure plate so as to permit of their being flattened out, radial channelshaped depressions being providedin'the sep-' arate annular surfaces to equalizethe stresses out the shape-changing imposed by pressing or collapsible wall.-

4 v The collapsible wall of the container is made from suitable materialsuch as aluminu'm, tinned plate or tin, or'cardboard, celluloid' or the like's imply andich'eaplyiby presses,'stamping machines or similar tools. The flexible or hinge-like parts are advan-f tageously formed. by xscoring the material;

The contentsmaybe withdrawn through one or more openings by slight local pressurein' a central position upon the collapsible wall. The complete removal of the contents of the receptacle is effectedby the uniform local pressure upon the central part of the collapsiblefwall. A closure for the container may consist of a cone which is provided in'the central pressure part ofthe collapsible wall in such manner'that by exerting pressure upon the cone the outlet is opened, and as the pressure is increasedthe flattening movement. 'ofthe collapsible wall is {produced whereby the contents are squeezed out. In" this waythe' quantity of the substance which is requiredfromsthecontainer beea sily wiped off and applied directly upon a brush,]] or-otherwise withdrawn, while immediately upon the pressure being relaxed a tight closure islproduced. j h v f The invention is illustrated by way of ex ample in the accompanyingdiagrammatic drawings, in which i Y e'u 1 c i n hrough the container,

"with the walls in their initial position and with a maximum capacity or content;

which is connected theannular part 12 by a hinge-like or flexible part 3 produced by scoring the wall. A further hinge-like or flexible part 2 provides the integral connec- 1 tion of the annular part 12 to a further annular part-13. The upper'wall ofthe container is produced. integrally can be shaped by the application of pressure, whereby the two ing a large space within the container (Figure 1).' The annularparts 12 and 13 are provided with radial; channel-shaped depressions 14which equalize the pressure; in the upper part of the receptacle, when the latter I is flattened towards the bottom of the conlike orfiexible part 1.1.

pressing the lapsible wall comes tainer. The rigid'wall of the container is connected tothe shape-changing wall by a. oint 9. Immediately adjacent to the joint 9 the annular part 13 is provided with a hinge- The cone or valve 4 is ingfi of the pressure part8, a leaf spring 7 cone upwardly and thereby closing the container. ,The cone 4 is provided on its upper face with a pressure pin 6 by disposed in the. openmeans of which the cone 4 can be depressed, whereupon the substance can issue through" the annular space which is thus provided between-the cone 4and the opening 5.

'The upper part 10 of the receptacle is provided on the arch-shaped surface opposite to the pressure part 8, with a depression 11 into which the cone can pass.

It will thus be understood that the, container described comprises a rigid wall hav ing a concavity on its inner face and an oppositely disposed collapsible wall connected at its peripheral edges with the coincident peripheral edges of the rigid wall so as thus to provide a completely enclosed cavity between the respective walls; and that the collapsible wall has on its inner face a concavity and is adapted to be deformed so that when sub 'stantially the whole contents of the container are expelled the collapsible part of the colto lie in contact with the rigid wall of the container. Thus in the illustrated construction the collapsible wall on from material that annular parts 12, 13 form, v1with}respect to each other and tothe other surfaces of the container.- an angle provid-.

its being deformed to expel the contents of the container is bent respectively on circular lines near the peripheral edge between the respective annular parts 13 and 12 and between the annular part 12 and the central rigid part of the collapsible wall, and that the alternate radial projections and recesses in the surrounding collapsible part of the collapsible wall serve for the distribution of pressure in deformation.

The container according to-the invention is operated as follows The container is filled either through the cone 4, which is held back by suitable means, or before the joining together of the upper and lower parts If pressure is applied by the pin 6 to the filled and closed container,

the cone 4 first moves downwardly and opens crease of pressure 'is transmitted by the spring 7 to the pressure part 8, which moves downwardly in a straight line, whereby a portion of thesubstance in the container corresponding in volume to the space displaced, is squeezedout.- Upon further local pressure being applied to the part 8, the annular parts 12 and 13 areflattened and change their position automatically ,andrgraduallyfrom an the annular outlet. Any further slight lIlangle into a straight line. When the pressure part8l1as reached a position upon the opposite arch of the lower, rigid wall of the container, the two annularsparts 12 and 13 come to lieiexactly on the wall; 10, as shown in Figure 2,that is to say, the receptacle is completely emptied by the close contacting of the shape-changing wall of the container with therigid wall.

In=Figure 2 a brush is illustrated as the means for removing that partof the contents of the container that may have been expelled through the central outlet;

It will be understood that the invention is not limited to the construction illustrated in the drawings. The numberand disposition of the separate annular surfaces, as also the shape of the pressure part, are inessential featuresof the invention.

The shape-changing wall of the container may consist of one or more connected layers of material. shapeddepressions for takingup the pressure which is produced in the flattening operation, radially disposed perforations may be pro vided in the annular parts,-the perforations being closed by means of an underlay of resilient material.

Instead of the closure hereinbefore described and illustrated in the accompanying drawings, any other suitable closure devices may be used.

I claim:

1. A container for plastic substances such as pastes, ointments and the like of the type in which the contents are expelled by squeez- Instead of providing channe1- 1 Wall near their respective oppositely disposed peripheral edges, the said collapsible wall having radial channel-shaped projections and recesses and a concavity on its inner side, said projections and recesses being adapted on the external application of pressure to contract or expand in succession and to come finally in contact with the inner-face of the said rigid wall, substantially as hereinbefore described.

2. A container for plastic substances such as pastes, ointments and the like of the type in which the contents are expelled by squeezing, comprising in combination a rigid Wall having a concavity on its inner face and a collapsible wall connected to the said rigid wall near their respective oppositely disposed peripheral edges, the said collapsible wall having radial channel-shaped projections and recesses and an annular concavity on its inner side, said projections and recesses being adapted on the external application of pres sure to contract or expand in succession and to come finally in contact with the inner face of the said rigid wall, substantially as hereinbefore described.

3. A container for plastic substances such as pastes, ointments and the like of thetype in which the contents are expelled by squeezing, comprising in combination a rigid wall having a concavity on its inner face and a collapsible wall connected to the said rigid Wall near their respective oppositely disposed peripheral edges, the saidcollapsible wall having radial channel-shaped projections and depressions and consisting of a central rigid 1 part adapted for the application and distribution of pressure and an integral and annular surrounding part having on the inside an annular concavity, the said surrounding annular part being adapted on the application of. pressure to the central part to contract or expand in succession permitting the internal face of the surrounding annular part to come in contact with the inner face of the said rigid Wall, substantially as hereinbefore described. 4 4. In a container as specified in claim?) a valve seating on an inner face surroundinga central hole in the central part of the collapsible wall, said valve having a part extending outwardly and adapted to be opened by pressure applied at the outside and a'spring adapted normally to maintain the said valvein its closed position, substantially as herein before described. j

5. A container for plastic substances such as pastes, ointments and the like of the type in which the contents are expelled by squeezing, comprising in combination a rigid Wall having a concavity on its inner face and a collapsible wall connected to the said rigid wall near their respective oppositely disposedperipheral edges, the said collapsible Wall having a central rigid part in which an outlet tic substances,

is provided and an integral surrounding part forming on the inner side a concavity wall and being, also provided with an alterthe said surrounding-part of the collapsible wall being formed of two annular parts adaptedto bend w-ith reference'to each other and to the central rigid part and to the said rigid nate series of radial projections and recesses, I A

substantially as hereinbefore described.

.6. A container as specified by claim 1, in Which the concavity of the rigid wall is provided within a convexity thereof, said convexity being similar to the concavity on said i collapsible wall.

. 7 A containerfor plastic substances'such' as pastes, ointments and the like in which the contents-are expelled by squeezing comprislng in combination a rigid part having the form of a; receptacle for said plastic substances and a collapsible part connected said collapsible part consisting of a central rigid member anda plurality of annular members hinged to each other by score lines,-

which the contents are expelled bysqueez- J I ing, comprising in combination, a rigid part Y havingthe form of a,'recepta cle for said plasand. a collapsible wall assomated with said rigid part toform aclosure therefor, said collapsible wall consisting of a rigid central member and a plurality of annular members,

annular membersalong-thecircular score line therebetween during deformation of said 001- lapsible wall on the external application of pressure thereon. 9. A container as specifiedby claimfl having the central rigidmember provided with an aperture,'and a closing member adapted to,

7 said annular members having each a set of radially directeddepressions adapted to hlngedly connect said annular to said rigid part to form a cover therefor, V

resiliently close said aperture in inoperative condition of the container and to open said aperture upon application of pressure to said closing member. r v

10. A container as specified by claim 8,

container in inoperative condition thereof, thus permitting the discharge of the contents from sa1d container upon application of an having the central rigid member provided r with a valve adapted to resiliently close said 

